/*
 * ! Copyright (c) 2009 Brandon Aaron (http://brandonaaron.net) Dual licensed
 * under the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
 * (http://www.opensource.org/licenses/gpl-license.php) licenses. Thanks to:
 * http://adomas.org/javascript-mouse-wheel/ for some pointers. Thanks to:
 * Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
 * 
 * Version: 3.0.2
 * 
 * Requires: 1.2.2+
 */

(function(b) {
	function d(a) {
		var f = [].slice.call(arguments, 1), e = 0;
		a = b.event.fix(a || window.event);
		a.type = "mousewheel";
		if (a.wheelDelta)
			e = a.wheelDelta / 120;
		if (a.detail)
			e = -a.detail / 3;
		f.unshift(a, e);
		return b.event.handle.apply(this, f)
	}
	var c = ["DOMMouseScroll", "mousewheel"];
	b.event.special.mousewheel = {
		setup : function() {
			if (this.addEventListener)
				for (var a = c.length; a;)
					this.addEventListener(c[--a], d, false);
			else
				this.onmousewheel = d
		},
		teardown : function() {
			if (this.removeEventListener)
				for (var a = c.length; a;)
					this.removeEventListener(c[--a], d, false);
			else
				this.onmousewheel = null
		}
	};
	b.fn.extend({
				mousewheel : function(a) {
					return a ? this.bind("mousewheel", a) : this
							.trigger("mousewheel")
				},
				unmousewheel : function(a) {
					return this.unbind("mousewheel", a)
				}
			})
})(jQuery);